I've always loved taking things apart and putting them back together, but I've never tried to build any kind of electronic device from scratch. I'm putting together something for an art project, and would really like it to have eyes with blinking eyelids. Some of the specifications to work with are: 1. The parts that move the eyelids need to be small (major components minus wires need to fit in a space no bigger than a baseball) 2. It has to run off some sort of battery, as it will not be able to be plugged in. 3. It needs to be lightweight (no more than 1-2 lbs) 4. Time isn't much of an issue, but money is, so I need a cost-effective solution. Is this feasible? I'd appreciate any kind of advice you have to share. I've been flipping through books and looking around online, but I just can't figure out where to start. Thanks for your time!